Prefabricated house prefabricated wallboard warehousing and transportation method

Abstract

The application provides a prefabricated house prefabricated wallboard warehousing and transportation method, S1, defining the set of prefabricated wallboards required by a certain building and the installation order set, and constructing the mold table set and the integral tool set of the prefabricating factory; S2, based on the installation order set, the prefabricated wallboards are distributed to the mold tables for production, and the produced prefabricated wallboards are matched to the integral tool for loading, ensuring that the stacking order in the integral tool is consistent with the installation order; S3, the full load integral tool is transported from the prefabricating factory to the yard for warehousing by using the transport vehicle, and the empty integral tool is transported back to the prefabricating factory; the application inversely deduces the production and loading plan according to the installation order, combines the integral tool and the drop and pull transportation mode, realizes the accurate distribution without secondary sorting, significantly improves the logistics turnover efficiency, and reduces the component damage risk.

Description

Technical Field

[0001] This invention relates to the field of visibility meters, and in particular to a method for storing and transporting prefabricated wall panels for prefabricated housing. Background Technology

[0002] With the large-scale development of the prefabricated building industry, the warehousing and transportation of prefabricated wall panels has become a key factor affecting project efficiency and cost. Currently, the industry mainstream adopts a separate racking system, with the main turnover locations divided into prefabrication plants, storage yards, and construction sites. The specific warehousing and transportation process using a separate racking system is as follows: Inside the prefabrication plant, prefabricated wall panels are hoisted one by one onto transport vehicles equipped with A-frames. Once full, they are transported to the storage yard, where they are unloaded one by one onto placement racks for storage. When on-site stock is needed, the prefabricated wall panels in the storage yard are hoisted one by one onto transport vehicles equipped with A-frames. Once full, they are transported to the construction site, where a crane unloads them one by one onto placement racks at the construction site. During on-site installation, a crane then hoists and installs the prefabricated wall panels stored on the on-site placement racks.

[0003] The prior art CN118982309B discloses a method and system for intelligent storage yards of prefabricated components. This technology collects data by installing sensors, uses a long short-term memory network model for demand forecasting, and combines storage yard capacity constraints to generate the optimal storage location and stacking order. At the same time, it performs AGV path planning. Although this technology optimizes the space utilization and handling path within the storage yard to a certain extent, it mainly focuses on inventory management based on predictive algorithms and path optimization for automated handling equipment. It does not involve fundamentally changing the form of loading and unloading racks to reduce the number of lifting operations, nor does it construct a reverse drive logic that directly reverses the on-site installation sequence to produce the mold. It is difficult to solve the damage risk caused by frequent component replacement.

[0004] Existing technology CN120806739A discloses a quality defect traceability system and method for prefabricated buildings. It utilizes blockchain, IPFS network, and BIM technology to collect and trace quality data throughout the entire process, achieving the identification of personnel, timing, location, and responsibility for quality defects. However, this technology focuses on quality data management and post-event traceability, lacking targeted solutions for improving the efficiency of physical logistics, reducing secondary handling in physical operations, and addressing the logistical pain points of mismatch between production and installation sequences. In summary, existing technologies have not yet proposed a systematic warehousing and transportation method that can achieve both reduced manpower and fewer hoisting operations throughout the entire process while ensuring that the produced component sequence directly matches the on-site installation sequence.

[0005] The main shortcomings of the separate tooling system are as follows: (1) In terms of equipment resource utilization, this model is significantly more dependent on yard gantry cranes, on-site cranes, and transport vehicles. Since precast wall panels need to be hoisted individually to A-frames or insertion racks, yard gantry cranes need to perform frequent single hoisting operations. After being transported to the construction site, the components need to be transferred piece by piece from the transport equipment to the temporary storage area by unloading cranes. The double hoisting operations reduce the overall utilization efficiency of gantry cranes and cranes. In addition, since the loading and unloading time at the yard and construction site is relatively long, vehicles are actually in a waiting state during loading and unloading, resulting in long non-transport time and low work efficiency.

[0006] (2) The multiple loading and unloading processes significantly increase the risk of component damage. Precast wall panels are mostly thin-walled reinforced concrete structures. During the loading, unloading, and installation processes at the precast plant, the unloading and installation yards, the panels undergo at least five lifting, turning, and placement operations. This can easily lead to defects such as edge and corner damage and surface cracks due to uneven stress on the lifting points and tool collisions. Repairing or reworking damaged wall panels not only increases costs but may also affect project schedules, making it difficult to meet the high-quality and high-efficiency development requirements of prefabricated buildings.

[0007] Due to the problems of low equipment utilization efficiency, multiple transfer processes, and easy component damage in the separate racking system, the industry has gradually introduced integrated racking. However, at present, there are few projects using this equipment both domestically and internationally, and it is only used in demonstration projects. Moreover, it has not been systematically considered in conjunction with production and on-site installation, resulting in low racking utilization efficiency. This invention proposes a method for warehousing and transporting prefabricated wall panels for prefabricated housing based on integrated racking. By integrating on-site hoisting schemes and prefabrication plant mold production, it achieves efficient turnover of integrated racking throughout the entire process, improving the utilization efficiency of yard gantry cranes, on-site cranes, and transport vehicles. Summary of the Invention

[0008] The main objective of this invention is to provide a method for warehousing and transporting prefabricated wall panels for prefabricated housing, which solves the problems of low utilization rate of yard gantry cranes and transport vehicles, easy damage from multiple transfers of components, and cumbersome secondary sorting caused by the disconnect between production plans and on-site installation requirements in the existing warehousing and transportation process of prefabricated wall panels for prefabricated buildings.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a method for storing and transporting prefabricated wall panels for prefabricated housing, the method comprising: S1. Define the set of prefabricated wall panels required for a certain building. and installation order ordered set And construct a set of prefabrication plant molds. and integrated tooling assembly ; S2, Ordered Sets Based on Installation Order The precast wall panels are distributed to the mold table for production, and the produced precast wall panels are matched to the integrated tooling for loading, ensuring that the stacking order in the integrated tooling is consistent with the installation order; S3. Use transport vehicles to transport the fully loaded integral tooling from the prefabrication plant to the storage yard for storage, and transport the empty integral tooling back to the prefabrication plant. S4. Based on the installation progress at the construction site, use transport vehicles to retrieve the corresponding integrated tooling from the storage yard and ship it to the construction site, and then transport the unloaded integrated tooling back to the storage yard.

[0010] In the preferred embodiment, steps S1 and S2 are implemented by running a production planning and scheduling system on a computer terminal, and the steps include: Define prefabricated wall panel set ,in This represents the total number of wall panels; Define the installation order ordered set S is an ordered permutation of set A, where the position of the element represents the order in which they are installed. Define the set of templates ,in The total number of molds, where each element (1≤k≤x) represents one independent mold. The number of molds x is determined by the area of ​​the mold and the production capacity: the area of ​​each mold is fixed, the difference is that the area of ​​each precast wall panel is different, so molds with the same area may produce different numbers of wall panels. Production planning and scheduling systems from ordered sets Start, calculate and assign to each mold. Allocation Set contiguous subsets Satisfy all subsets No intersection and union is and subset The sum of the areas of all interior wall panels is less than the area of ​​the formwork. The area of ​​the mold platform is determined, thereby generating a mold platform layout plan.

[0011] In the preferred embodiment, steps S2, S3, and S4 are implemented by running the scheduling and coordination module of the digital logistics system on a computer terminal. The steps include: Define an integral tooling assembly ,in The total number of integral fixtures for loading precast wall panels, where each element (1≤k≤y) represents one independent integral tooling. The number of toolings y is determined by the actual loading capacity of the tooling: the loading capacity of each integral tooling is fixed. The difference lies in the volume of each prefabricated wall panel. Therefore, integral toolings with the same loading capacity may stack different numbers of wall panels. The scheduling and coordination module establishes a subset of the platform. To integrated tooling assembly The mapping will set the subset The corresponding precast wall panels are installed into an integrated fixture. Calculate and verify subsets The total volume of all interior wall panels is less than or equal to that of the monolithic fixture. The loading capacity; if the sum of the volumes exceeds this, then the subset will be... Disassemble and install multiple integrated tooling units; Constructing a collection of stockyards An integrated fixture used to store fully loaded wall panels. As an unordered set, all fully loaded integral tooling is unorderedly grouped into the set. And record the storage location; Build a shipping collection , It is a collection of storage yards Y The ordered subset of elements, whose order is determined by the installation progress at the construction site, is used by the scheduling and coordination module based on the ordered subset that currently needs to be installed at the construction site. From the storage yard Search and extract the corresponding set of integrated tooling components. Ensure the set The order of shipment and Consistent.

[0012] In the preferred embodiment, the transport vehicle in steps S3 and S4 consists of a tractor unit and a trailer, which can be separated and reassembled. Step S3 includes: the tractor unit pulls an empty trailer to the loading point of the prefabrication plant, and the tractor unit separates from the trailer; the prefabricated wall panels are stacked into the integral fixture on the trailer in the prefabrication plant until it is full; the tractor unit returns to pull the fully loaded trailer to the yard, and the yard gantry crane lifts the fully loaded integral fixture to the storage location.

[0013] In the preferred embodiment, after the yard gantry crane unloads the fully loaded integral tooling in step S3, the following steps are also included: the yard gantry crane hoists the empty integral tooling onto the trailer; the tractor pulls the trailer carrying the empty integral tooling back to the prefabrication plant, completing the storage cycle.

[0014] In the preferred embodiment, step S4 includes: the tractor unit pulls the empty trailer to the designated location in the yard; the yard gantry crane hoists the fully loaded integral jigs specified in the installation sequence onto the trailer; the tractor unit pulls the fully loaded trailer to the construction site, and the tractor unit separates from the site; the crane equipment at the construction site directly lifts the precast wall panels from the integral jigs for installation. Step S4, after unloading and installation are completed at the construction site, also includes: the tractor returning to the construction site to connect the trailer carrying the empty integrated tooling; the tractor pulling the trailer back to the storage yard to complete the shipping cycle.

[0015] In the preferred embodiment, the method uses a digital logistics system for equipment management, which includes RFID tags deployed on integrated tooling, tractors and trailers, and RFID readers deployed at prefabrication plants, storage yards and construction sites. The digital logistics system establishes a unique ID for each piece of equipment and automatically identifies and records the binding relationship between "integrated tooling and pallets" and "trailer head and pallets" through RFID card readers.

[0016] In the preferred embodiment, the digital logistics system updates the status in real time based on the equipment location and binding relationship, including: the full / empty status of the integrated tooling and the transportation / idle status of the tractor, and sends dispatch instructions to the tractor driver.

[0017] In the preferred embodiment, the digital logistics system is deployed on a computer terminal as four functional modules, including: Equipment Information Management Module: Initialize the system, establish a database of unique identifiers for integrated tooling, trailers and tractors, and set the inherent attribute parameters for each type of equipment, including the upper limit of tooling volume, the load threshold of trailers and the traction power of tractors; Real-time tracking and status dashboard module: Constructs a digital twin mapping, refreshes the three-dimensional coordinate mapping of equipment in the prefabrication plant, storage yard and construction site in real time through the data stream of RFID card reader, and dynamically renders the topological connection status of "tooling and trailer" and "trailer head and trailer" on the visualization interface. Scheduling and Coordination Module: Performs reverse-driven calculations to order the installation sequence at the construction site. The system parses the data into a timestamped logistics task queue and triggers task pushes based on the idle status of the tractor unit; the historical record query module uses the timeline as an index to store the trajectory data and binding history of the device in full through blockchain or database logs, forming a traceable logistics evidence chain.

[0018] In the preferred embodiment, the scheduling and coordination module works in conjunction with the real-time tracking and status dashboard module to execute a closed-loop state machine algorithm based on RFID event triggering. This algorithm includes the following nonlinear state transition steps: SA Loading Completion Judgment: When the RFID reader in the prefabrication plant continuously detects the ID of a certain integrated tooling and the operator terminal confirms the "full load" signal, the system locks the tooling status to "awaiting entry into the warehouse" and sends a "prefabrication plant pickup" instruction to an idle tractor. State transition SB dynamic binding verification: When the tractor unit reverses and connects to the trailer, if the on-board RFID reader simultaneously captures the tractor unit ID, trailer ID, and integrated tooling ID, the system automatically generates a ternary binding relationship tuple. And set the status of the assembly to "in storage and transportation"; State transition SC conflict anomaly circuit breaker: If the system detects that a "fully loaded integral tooling" is physically bound to a "trailer marked as damaged", or if an "empty tractor" attempts to execute the "ship fully loaded tooling" task but does not detect the tooling ID, the algorithm triggers the anomaly circuit breaker mechanism and pops up a conflict alarm on the scheduling terminal. State transition SD location discrete mapping: When a fully loaded integral tooling is placed in the storage area by a yard gantry crane, the system confirms the placement coordinates via fixed RFID reader triangulation or gantry crane spreader reader. The system immediately releases the aforementioned three-element binding relationship and updates the digital status of the integral tooling to "yard storage - coordinates". "to bring it into the shipment collection" The pool of candidates for retrieval.

[0019] This invention provides a method for storing and transporting prefabricated wall panels for prefabricated housing. Firstly, this method establishes a reverse-driving logic from the on-site installation plan to the prefabrication plant production plan using an "installation sequence reverse-engineering method," thus ordering the installation sequence. This is directly mapped to the mold table layout plan and the loading plan of the integrated tooling, ensuring that the stacking order of the produced wall panels in the tooling naturally meets the on-site installation requirements. This eliminates the need for secondary sorting and transshipment in the warehousing and shipping process, greatly improving the response speed and accuracy of the supply chain. Secondly, the use of integrated tooling in conjunction with detachable transport vehicles consisting of tractor units and trailers enables a "drop-and-hook transport" mode. The tractor units can be separated at the prefabrication plant and construction site to perform other tasks without waiting for loading and unloading operations, significantly reducing the non-operation waiting time of transport vehicles and improving vehicle turnover efficiency. At the same time, the full-process turnover of integrated tooling avoids the repeated handling of components between different racks, minimizing the number of lifting operations of components, thereby greatly reducing the risk of edge damage and cracks in prefabricated wall panels caused by multiple lifting and collisions, and ensuring the quality of components. Furthermore, by establishing equipment ledgers through a digital logistics system and utilizing RFID technology to update equipment status and binding relationships in real time, the system achieves full-process visualized monitoring and intelligent scheduling of integrated tooling, pallets, and tractor heads. Based on state transition algorithms, it automatically handles inbound binding, conflict termination, and storage location mapping, ensuring accurate execution of logistics instructions, effectively avoiding human scheduling errors, and improving the overall intelligent management level of the warehousing and transportation system. Finally, this method does not require large-scale physical modifications to existing tooling units; tooling unit aggregation can be achieved through algorithm optimization of the production planning and scheduling system. With installation subset The matching is highly feasible and economically beneficial for engineering implementation. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a top view of the mold table used for producing precast wall panels in the prefabrication plant of the present invention. Figure 2 This is an isometric structural schematic diagram of the integral tooling for storing prefabricated wall panels according to the present invention; Figure 3 This is a top view schematic diagram of the transport vehicle of the present invention, which consists of a tractor unit and a trailer. Figure 4 This is an axonometric structural diagram of the transport vehicle of the present invention in its combined state; Figure 5 This is a flowchart illustrating the overall process of warehousing and shipping prefabricated wall panels for prefabricated housing according to the present invention. Figure 6 This is a logical relationship diagram of the production, logistics and on-site installation of the prefabricated wall panels of this invention; Figure 7 This is a diagram showing a tractor pulling a trailer loaded with an empty integral tooling in the warehousing process of the present invention, preparing for transfer. Figure 8 This is a schematic diagram of the tractor pulling the pallet to the loading position of the prefabrication plant wall panel in the warehousing process of the present invention; Figure 9 This is a schematic diagram of the separation of the tractor head and the trailer plate in the warehousing process of the present invention, and the tractor head driving away from the loading area of ​​the prefabrication plant; Figure 10 This is a schematic diagram of the prefabricated wall panels being stacked on an integrated tooling on an inward-facing trolley in the warehousing process of the present invention. Figure 11 This is a schematic diagram of the tractor returning to the prefabrication plant to connect to the fully loaded trailer in the warehousing process of this invention; Figure 12 This is a schematic diagram of the warehousing process of the present invention, in which a tractor unit transports a fully loaded pallet from the prefabrication plant to a designated location in the storage yard; Figure 13 This is a schematic diagram of the storage process of the present invention, in which the yard gantry crane lifts a fully loaded integral tooling to the storage location; Figure 14 This invention describes the storage cycle in which the yard gantry crane lifts an empty integral tooling onto a pallet using the storage process described in the invention. Figure 15 This is a schematic diagram of the shipping process of the present invention, in which a tractor unit pulls an empty pallet to the designated loading position in the yard; Figure 16This is a schematic diagram of the yard gantry crane lifting the unloaded integral tooling off the pallet in the shipping process of this invention; Figure 17 This is a schematic diagram of the yard gantry crane hoisting the designated fully loaded integral tooling onto the trailer according to the installation sequence in the shipping process of this invention; Figure 18 This is a diagram showing how a tractor unit transports a trailer fully loaded with integrated tooling to the construction site during the shipping process of this invention. Figure 19 This is a schematic diagram of the tractor unit separating from the fully loaded trailer and driving away at the construction site during the shipping process of this invention; Figure 20 This is a diagram of the trailer plate of the tractor unit returning to the connection load and the empty-load integral tooling after on-site hoisting in the shipping process of this invention; Figure 21 This is a cycle diagram of the shipping process of the present invention, in which a tractor unit pulls an empty trailer from the construction site back to the storage yard.

[0021] In the diagram: 1. Mold table; 2. Integrated tooling; 3. Transport vehicle; 301. Tractor head; 302. Detailed Implementation

[0022] Example 1 like Figure 1-21 As shown, a method for storing and transporting prefabricated wall panels for prefabricated housing is provided, the method comprising: S1. Define the set of prefabricated wall panels required for a certain building. and installation order ordered set And construct the prefabrication plant's mold set 1 and integrated tooling 2 sets ; S2, Ordered Sets Based on Installation Order The precast wall panels are distributed to the mold table 1 for production, and the produced precast wall panels are matched to the integrated tooling 2 for loading, ensuring that the stacking order in the integrated tooling 2 is consistent with the installation order; S3. Use transport vehicle 3 to transport the fully loaded integral tooling 2 from the prefabrication plant to the storage yard for storage, and transport the empty integral tooling 2 back to the prefabrication plant. S4. According to the installation progress at the construction site, use transport vehicle 3 to extract the corresponding integral tooling 2 from the storage yard and transport it to the construction site, and transport the empty integral tooling 2 back to the storage yard.

[0023] This embodiment proposes a prefabricated wall panel warehousing and transportation method for prefabricated residential buildings based on reverse-driven logic. This method uses digitalization and standardization to directly map the installation requirements at the construction site to the front-end production and logistics processes. First, step S1 is executed, the core of which lies in establishing the mapping relationship between physical entities and data models. Specifically, the set of prefabricated wall panels required for a certain building is defined as follows: ,in This represents the total number of prefabricated wall panels required for the building, and the set It includes wall panel elements of all specifications and models. Simultaneously, based on the on-site hoisting plan determined in the construction organization design, an ordered set for the installation sequence is defined. This ordered set The order of elements in the code strictly corresponds to the actual installation order on the construction site; that is, the smaller the element's subscript, the earlier it was installed on site. Furthermore, a set of formwork platforms 1 is constructed at the prefabrication plant. ,in The total number of available molds, each with a fixed production area attribute; simultaneously, a set of integrated tooling 2 for logistics turnover is constructed. ,in This represents the total number of integral tooling units, each with a fixed upper limit on loading volume and load capacity. This step provides the basic data boundaries for subsequent scheduling calculations.

[0024] Next, step S2 is executed. This step is crucial for achieving "reverse-driven" operation and aims to solve the problem of disconnect between production and installation in the traditional model. In practice, the system does not schedule according to the traditional logic of maximizing mold utilization, but rather based on an ordered set of installation sequences. Perform continuous truncation. The system starts from an ordered set. Starting with the first element, extract a contiguous subset. Assigned to mold table Production begins. At this point, area constraints must be met, i.e., subset... The sum of the areas of all precast wall panels must be less than or equal to the area of ​​the mold. The effective production area. After completing the production scheduling, the system further matches these produced prefabricated wall panels into the integral tooling 2. This matching process also follows ordered set principles. The logic ensures that the prefabricated wall panels installed in the same integral tooling 2 form an ordered set. A continuous segment, and the physical stacking order within the tooling is... The installation sequence should be consistent throughout; for example, the first wall panel to be installed should be placed on the outermost or topmost layer of the fixture for easy access on-site. When planning the loading, volume constraints must be met, meaning the load should be allocated to a single integral fixture. The sum of the volumes of the precast wall panels It must be less than or equal to the rated loading capacity of the tooling. If the volume of a batch of wall panels exceeds the limit of a single tooling, it will be split up, but the split tooling will still maintain a strict sequence relationship.

[0025] Step S3 is then executed, which mainly describes the warehousing and logistics process from the prefabrication plant to the yard, employing a "drop-and-hook" transport mode to improve efficiency. The transport vehicle 3 consists of a tractor unit and a trailer, connected by a towing pin and capable of rapid separation. After the integrated tooling 2 is loaded at the prefabrication plant, the tractor unit pulls the trailer carrying the fully loaded integrated tooling 2 to the yard. Upon arrival at the yard, the fully loaded integrated tooling 2 is unloaded and stored using the yard gantry crane. At this point, the storage location of the fully loaded tooling in the yard can be unordered, as its identification ID is already bound to the sequence of wall panels loaded internally and can be retrieved at any time through a digital system. After unloading, the tractor unit does not wait but instead returns to the prefabrication plant with the trailer carrying the empty integrated tooling 2, thus forming a closed-loop warehousing cycle. This operating mode ensures that fully loaded components can be removed from the factory in a timely manner, avoiding inventory backlog, while the timely return of empty tooling ensures production continuity.

[0026] Finally, step S4 is executed, which implements shipment management based on the "just-in-time" concept. When an installation request is issued from the construction site, the system, based on the current installation progress, locks the subset of wall panels that will be installed in the ordered set $S$ and indexes the target integral fixture 2 stored in that subset. The tractor unit of transport vehicle 3 pulls an empty pallet to the storage yard, loads the designated target integral fixture 2 onto the vehicle, and ships it to the construction site. Upon arrival at the site, the tractor unit separates from the pallet loaded with the fixture, and the tractor unit drives away to perform other tasks, while the pallet remains on site as a temporary "mobile warehouse." On-site lifting equipment directly lifts the wall panels from the integral fixture 2 left on the pallet in the predetermined stacking order for installation. Since the stacking order and installation order have been pre-matched in step S2, no secondary searching or relocation work is required on site. After all the wall panels inside the tooling are installed, the tractor unit will use the return trip of a subsequent transport task or a special dispatch to transport the pallet carrying the empty integral tooling 2 back to the yard, completing the shipping cycle.

[0027] This technical solution achieves significant beneficial effects through the aforementioned steps. First, by working backward from the installation sequence to plan production and loading, this method fundamentally eliminates the secondary sorting process at the construction site, enabling "immediate lifting upon arrival" and greatly improving on-site operational efficiency while reducing site occupancy requirements. Second, the use of integrated tooling combined with a trailer-mounted transport mode eliminates the need for repeated lifting and relocation of components throughout the entire process. Compared to traditional separate racking systems, this reduces at least five single lifting operations, significantly lowering the risk of edge damage and cracks in prefabricated wall panels due to collisions and uneven stress, thus significantly improving the quality of finished product delivery. Third, the separate operation mode of the tractor unit and trailer in transport vehicle 3 eliminates the need for the powered vehicle to wait for loading and unloading, greatly reducing non-operational downtime and significantly improving the turnover rate and overall utilization rate of logistics equipment. Finally, through the deep integration of mathematical set definitions and physical operation processes, this method achieves synchronization between logistics information flow and physical logistics, providing a highly operable implementation path for the refined management of prefabricated buildings.

[0028] Example 2 To further illustrate with reference to the embodiments, steps S1 and S2 are implemented by running a production planning and scheduling system on a computer terminal, and the steps include: Define prefabricated wall panel set ,in This represents the total number of wall panels; Define the installation order ordered set S is an ordered permutation of set A, where the position of the element represents the order in which they are installed. Define the set of templates 1 ,in The total number of molds, where each element (1≤k≤x represents 1 independent mold, and the number of molds x is determined by the area of ​​the mold and the production capacity: the area of ​​each mold is fixed, the difference is that the area of ​​each precast wall panel is different, so molds with the same area may produce different numbers of wall panels. Production planning and scheduling systems from ordered sets Start, calculate and assign to each mold. Allocation Set contiguous subsets Satisfy all subsets No intersection and union is and subset The sum of the areas of all interior wall panels is less than the area of ​​the formwork. The area of ​​the mold platform is determined, thereby generating a mold platform layout plan.

[0029] In this embodiment, steps S1 and S2 are implemented by running a production planning and scheduling system on a computer terminal. This system transforms the physical installation requirements at the construction site into digital production instructions within the factory through mathematical modeling. First, the system needs to define a set of prefabricated wall panels. In this set, variables Each element in the set represents the total number of precast wall panels required for a specific building or construction section. This represents a specific precast wall panel, including its geometric dimensions, model, and reinforcement information. Simultaneously, the system defines an ordered set for the installation sequence. ordered set It is a set A specific arrangement where the position index of an element in the sequence directly represents the installation order on the construction site; that is, the wall panel at the beginning of the sequence must be hoisted before the wall panel at the end of the sequence. Furthermore, the system constructs a set of formwork platforms in the prefabrication plant. , where variables This represents the total number of molds available for producing this batch of wall panels. Each element in the set... Represents a standalone mold table device, where the subscript The range of values ​​is greater than or equal to 1 and less than or equal to 1. Integer. Number of molds. The determination of the area is limited by the fixed production area and production capacity of the mold. Since the surface area of ​​each mold is a fixed physical parameter, and the projected area of ​​different models of precast wall panels is different, in actual production, a mold with the same area may produce a large wall panel or multiple small wall panels at the same time.

[0030] Based on this, the production planning and scheduling system executes a reverse-driven placement algorithm. The system uses ordered sets based on installation order. Starting from the first element in the sequence, production tasks are assigned by sequentially extracting elements from the sequence. Specifically, the system calculates and assigns tasks to each module. Allocation Set A contiguous subset contiguous subsets here This refers to ordered sets A set consisting of several wall panel elements that are adjacent in position. The allocation process must satisfy two key constraints: first, all allocated subsets... The subsets are mutually exclusive, meaning no wall panel is assigned repeatedly, and all subsets are mutually exclusive. The union of the sets must be equal to the original set. First, ensure that all wall panels to be produced are covered; second, for any given mold table and its corresponding subsets subset The sum of the projected areas of all interior wall panels must be less than or equal to the formwork. The effective production area. Using this algorithm, the system generates a mold layout plan, determining which wall panels each mold is responsible for producing and how these wall panels are combined on the mold.

[0031] The beneficial effects of adopting the above technical solution are as follows: This method breaks away from the traditional discrete scheduling model that only aims to maximize the utilization of the mold table, and innovatively takes "installation sequence" as the primary constraint factor for scheduling. By mandating that the wall panels allocated to the mold table must be a continuous subset of the installation sequence, it ensures that the wall panels produced by the same mold table naturally maintain consistency or proximity with the on-site installation sequence in subsequent demolding and stacking stages. This approach greatly reduces the amount of secondary sorting work required to match the installation sequence in subsequent warehousing and shipping stages, allowing prefabricated components to carry the correct logistics timing genes from the very beginning, thereby significantly improving the flow efficiency of the entire chain from production to installation, and effectively reducing the risk of site backlog caused by disordered production and component damage caused by frequent handling.

[0032] In the preferred embodiment, steps S2, S3, and S4 are implemented by running the scheduling and coordination module of the digital logistics system on a computer terminal. The steps include: Define a set of integral tooling ,in The total number of integral fixtures for loading precast wall panels, where each element (1≤k≤y represents 1 independent integral tooling. The number of tooling y is determined by the actual loading capacity of the tooling: the loading capacity of each integral tooling is fixed. The difference lies in the different volumes of each precast wall panel. Therefore, integral tooling with the same loading capacity may stack different numbers of wall panels.) The scheduling and coordination module establishes a subset of the platform. To integrated tooling assembly The mapping will set the subset The corresponding precast wall panels are installed into an integrated fixture. Calculate and verify subsets The total volume of all interior wall panels is less than or equal to that of the monolithic fixture. The loading capacity; if the sum of the volumes exceeds this, then the subset will be... Disassemble and install multiple integrated tooling units 2; Constructing a collection of stockyards An integrated fixture used to store fully loaded wall panels. As an unordered set, all fully loaded integral tooling 2 are unorderedly grouped into the set. And record the storage location; Build a shipping collection , It is a collection of storage yards Y The ordered subset of elements, whose order is determined by the installation progress at the construction site, is used by the scheduling and coordination module based on the ordered subset that currently needs to be installed at the construction site. From the storage yard The corresponding integral tooling 2 is retrieved and extracted to form a set. Ensure the set The order of shipment and Consistent.

[0033] In this embodiment, steps S2, S3, and S4 are implemented by running the scheduling and coordination module of the digital logistics system on a computer terminal. This module, acting as the logical hub connecting the production and construction ends, is responsible for executing the core algorithms from loading planning to shipment scheduling. First, the system needs to define an integrated tooling set. In this set, variables This represents the total number of integrated fixtures used to load prefabricated wall panels; each element in the set... Represents a standalone, integral tooling entity, where the subscript greater than or equal to 1 and less than or equal to 1 Integer. Quantity of tooling. The specific value depends on the matching between the actual loading capacity of the integral tooling and the volume of the precast wall panels. Since the physical loading capacity of each integral tooling is a fixed constant, while the geometric volume of different models of precast wall panels varies significantly, the number of wall panels loaded by integral tooling with the same physical loading capacity in actual operation is not constant. The system needs to dynamically calculate the required number of tooling based on the specific volume data.

[0034] Based on this, the scheduling and coordination module executes the loading matching algorithm to establish a subset of module production. To integrated tooling assembly The mapping relationship. Specifically, the system assigns a subset of continuous wall panels to a specific module in the preceding steps. Treating it as a unit to be loaded, attempt to install the prefabricated wall panels into the corresponding integrated tooling. In this operation, the system automatically performs volume constraint verification, i.e., calculates the subset. The sum of the volumes of all prefabricated wall panels inside And determine whether the value is less than or equal to the integral tooling. Rated load capacity If the verification passes, the mapping is valid; if the sum of the volumes exceeds the loading capacity of a single tooling, the system initiates the splitting logic, dividing the subset... The wall panels are disassembled and sequentially installed into multiple integrated fixtures, but the relative order of the wall panels within the fixtures remains consistent with the original installation order throughout the disassembly process. The local sequence is consistent, ensuring the orderliness within the logistics unit.

[0035] Subsequently, the system constructs a collection of stockyards. To manage warehouse status. This collection. This system logically aggregates all fully loaded integral tooling. Defined as an unordered set, it means that the storage location of the tooling in the yard's physical space is not restricted by the installation order and can be randomly or optimally stored based on the availability of space in the yard. The system will then collect all completed, loaded integral tooling. Set Furthermore, by using RFID and positioning technology, the three-dimensional spatial coordinates and storage status of each tooling in the yard are accurately recorded, achieving "disordered storage and orderly management".

[0036] Finally, the system constructs the shipping collection. To execute the shipment instruction. Shipment set. Defined as a collection of stockyards An ordered subset of elements, whose order is strictly determined by the current installation progress at the construction site. The scheduling and coordination module receives real-time feedback from the construction site regarding the ordered subset of wall panels to be installed. Using an indexing algorithm from the heap collection The system quickly retrieves the corresponding integral fixtures containing these wall panels and organizes these fixtures according to... The installation sequence of the middle wall panels is extracted to form a set. This process ensures the shipment of complete sets. Tooling release sequence and on-site installation requirements Maintain a high degree of consistency and guide transport vehicles to deliver goods in sequence.

[0037] The beneficial effects of adopting the above technical solution are as follows: Through the intelligent calculation of the scheduling and coordination module, precise matching of the integrated tooling of the logistics container with the production unit module subset and the consumer unit installation subset is achieved. First, the dynamic loading algorithm based on volume verification maximizes the loading rate of the integrated tooling and reduces the waste of ineffective transportation space. Second, by constructing a two-layer management architecture of "unordered yard set" and "ordered shipment set," the site restriction problem of traditional yards requiring physical stacking according to installation sequence is solved, greatly improving the utilization rate and turnover flexibility of yard space. Finally, the shipment set... With installation subset The strict sequential control logic ensures that the order in which components arrive on site is the same as the installation order, completely eliminating the secondary handling and sorting processes on site, and significantly improving the construction efficiency and supply chain response speed of prefabricated buildings.

[0038] In the preferred embodiment, the transport vehicle 3 in steps S3 and S4 consists of a tractor head 301 and a trailer 302, and the tractor head 301 and the trailer 302 can be separated and reassembled. Step S3 includes: the tractor 301 pulls the empty trailer 302 to the loading point of the prefabrication plant, and the tractor 301 separates away; in the prefabrication plant, the prefabricated wall panels are stacked on the integral fixture 2 on the trailer 302 until it is full; the tractor 301 returns to pull the fully loaded trailer 302 to the yard, and the yard gantry crane lifts the fully loaded integral fixture 2 to the storage position.

[0039] In the preferred embodiment, after the yard gantry crane unloads the fully loaded integral tooling 2 in step S3, the following steps are also included: the yard gantry crane hoists the empty integral tooling 2 onto the trailer 302; the tractor head 301 pulls the trailer 302 carrying the empty integral tooling 2 back to the prefabrication plant, completing the storage cycle.

[0040] In this embodiment, the hardware carrier involved in steps S3 and S4 is a specially designed transport vehicle 3. This transport vehicle 3 adopts a modular trailer-swapping transport design, consisting of a power unit, i.e., the tractor unit 301, and a carrying unit, i.e., the trailer 302. The tractor unit 301 and the trailer 302 are mechanically connected through a standard traction connection device, allowing them to be combined into a complete transport vehicle for long-distance travel, and to be quickly separated and reassembled in a stationary state through a decoupling mechanism. This structural design is the physical basis for realizing the efficient operation mode of "the tractor unit never stops while the cargo box moves" in this method, allowing the power equipment to flexibly switch between different carrying devices, thereby breaking the traditional limitation that the tractor unit and the cargo box must operate synchronously.

[0041] Specifically, the warehousing operation process in step S3 demonstrates a highly efficient logistics cycle logic. First, a tractor unit 301 tows either an empty integral tooling 2 or an empty pallet 302 to the designated loading point at the prefabrication plant. Upon arrival, the driver operates the separation mechanism to detach the tractor unit 301 from the pallet 302. The tractor unit 301 then leaves the area to perform other towing tasks, leaving the pallet 302 at the prefabrication plant as a temporary loading platform. Within the prefabrication plant's production area, overhead cranes or hoisting equipment load the prefabricated wall panels, which have been produced and cured, into the integral tooling 2 parked on the pallet 302 according to the pre-planned sequence number in step S2, until the tooling reaches its volume or weight loading limit. After loading is completed, the dispatch system assigns an idle tractor unit 301 to return to the loading point, reversing to hook up with the fully loaded pallet 302. Subsequently, the tractor unit 301 tows the fully loaded pallet 302 to the storage yard. Upon arrival at the unloading area of ​​the yard, the yard gantry crane lowers the spreader to lift the integral tooling 2, which is fully loaded with prefabricated wall panels, from the trailer 302 and move it to the planned storage location within the yard for storage.

[0042] As a preferred implementation of this method, to further improve the efficiency of the logistics closed loop, the operation does not end after the yard gantry crane unloads the fully loaded integral tooling 2 in step S3. At this time, the pallet 302 is in an empty state. To avoid the waste of energy and transportation capacity caused by the transport vehicles returning to the prefabrication plant empty, the yard gantry crane immediately hoists the idle empty integral tooling 2 in the yard onto the pallet 302. After loading is completed, the tractor unit 301 pulls the pallet 302 carrying the empty integral tooling 2 back to the prefabrication plant. This action not only completes the return trip scheduling of the transport vehicles, but also simultaneously completes the replenishment of empty tooling to the production end, forming a complete warehousing logistics closed loop of "fully loaded out of the factory - loaded container into the warehouse - empty container return".

[0043] The beneficial effects of adopting the above technical solution are obvious. First, the separate operation mode of the tractor unit 301 and the trailer 302 completely changes the inefficient situation of the traditional "trucks waiting for goods" model. During the long loading and unloading process, the expensive motorized tractor units are no longer forced to sit idle, but can continuously perform transportation tasks, greatly improving vehicle turnover. It is estimated that the number of tractor units required can be reduced by more than 30% under the same transport volume. Second, using the trailer 302 as a mobile loading platform, combined with the overall lifting of the integrated tooling 2, shortens the transfer time of goods between the yard and the vehicle from several hours for traditional single-piece lifting to several minutes for overall lifting, significantly reducing the occupation of yard gantry crane resources and alleviating the bottleneck of yard operations. Finally, the return transport mechanism of the empty tooling in the preferred scheme effectively solves the contradiction between the shortage of tooling in the prefabrication plant and the backlog of tooling in the yard, ensuring the dynamic balance of the integrated tooling in the supply chain, and achieving the minimization of logistics costs and the maximization of resource utilization.

[0044] In the preferred embodiment, step S4 includes: the tractor unit 301 pulls the empty trailer 302 to the designated location in the yard; the yard gantry crane hoists the fully loaded integral fixture 2, specified in the installation sequence, onto the trailer 302; the tractor unit 301 pulls the fully loaded trailer 302 to the construction site, and the tractor unit 301 separates from the site; the hoisting equipment at the construction site directly lifts the precast wall panel from the integral fixture 2 for installation. Step S4, after unloading and installation are completed at the construction site, also includes: the tractor head 301 returning to the construction site to connect with the trailer 302 carrying the empty integral tooling 2; the tractor head 301 pulling the trailer 302 back to the storage yard to complete the shipping cycle.

[0045] In this embodiment, the shipping process in step S4 is a "just-in-time" logistics delivery driven by the real-time installation progress at the construction site. First, the tractor unit 301 pulls the empty pallet 302 to the designated loading position in the yard. At this time, the scheduling and coordination module of the digital logistics system has locked the specific integral tooling 2 corresponding to the yard set $Y$ according to the sequence of wall panels that urgently need to be installed on site. After receiving the instruction, the yard gantry crane accurately hoists the designated fully loaded integral tooling 2 onto the pallet 302 that is parked in place. Subsequently, the tractor unit 301 pulls the pallet 302 carrying the fully loaded integral tooling 2 to the construction site. After arriving at the designated unloading area on site, the driver operates the separation device to decouple the tractor unit 301 from the pallet 302. The tractor unit 301 then leaves the site to perform other transportation tasks, while the fully loaded pallet 302 is left on site as a temporary mobile storage rack. The lifting equipment at the construction site does not need to be transported or stacked on the ground. Instead, it directly lifts the precast wall panels one by one from the integrated tooling 2 parked on the trailer 302 and installs them on each floor in a pre-arranged order.

[0046] In the subsequent processing of step S4, this method further constructs a reverse logistics closed loop for the shipping process. After all the precast wall panels inside the integral tooling 2 are hoisted on-site, the tooling becomes empty but remains fixed on the trailer 302. At this time, the dispatching system assigns a return trip or idle tractor 301 to return to the construction site and reassemble it with the trailer 302 carrying the empty integral tooling 2. Subsequently, the tractor 301 pulls the assembly back to the yard. Upon arrival at the yard, the gantry crane unloads the empty tooling for cleaning or reshipment to the prefabrication plant, while the trailer 302 enters the next round of shipping or warehousing tasks, thus completing a full shipping cycle.

[0047] The beneficial effects of adopting the above technical solution are mainly reflected in the following aspects. First, the "trailer head separation, trailer retention" swapping transport mode completely solves the problem of long-term vehicle congestion at construction sites due to slow hoisting speeds, freeing expensive power locomotives from tedious on-site waiting and significantly improving vehicle transport efficiency. Second, in conjunction with the reverse scheduling in the preceding steps, on-site lifting equipment can directly pick up and install components sequentially from the tooling on the trailer, eliminating the traditional process of unloading components, secondary sorting on the ground, and secondary hoisting. This not only significantly reduces the area occupied by temporary storage areas on site, adapting to the construction needs of confined spaces, but also minimizes the number of times components are hoisted on site, effectively avoiding component corner bumps and damage caused by multiple handling. Finally, the timely return mechanism of empty tooling and trailers ensures efficient turnover of logistics containers, avoids empty container backlog on site, and reduces the operating costs of the entire supply chain.

[0048] In the preferred embodiment, the method uses a digital logistics system for equipment management, which includes RFID tags deployed on the integrated tooling 2, the tractor head 301 and the trailer 302, as well as RFID readers deployed in the prefabrication plant, storage yard and construction site. The digital logistics system establishes a unique ID for each piece of equipment in the ledger and automatically identifies and records the binding relationship between "integrated tooling 2, pallet 302" and "trailer head 301, pallet 302" through an RFID reader.

[0049] In the preferred embodiment, the digital logistics system updates the status in real time based on the equipment location and binding relationship, including: the full load / empty status of the integrated tooling 2, and the transportation / idle status of the tractor head 301, and sends dispatch instructions to the driver of the tractor head 301.

[0050] In the preferred embodiment, the digital logistics system is deployed on a computer terminal as four functional modules, including: Equipment Information Management Module: Initialize the system, establish a unique identification ID database containing integrated tooling 2, trailer 302 and tractor head 301, and set the inherent attribute parameters of each type of equipment, including tooling volume limit, trailer load threshold and tractor head traction power; Real-time tracking and status dashboard module: Constructs a digital twin mapping, refreshes the three-dimensional coordinate mapping of equipment in the prefabrication plant, storage yard and construction site in real time through the data stream of RFID card reader, and dynamically renders the topological connection status of "tooling and trailer" and "trailer head and trailer" on the visualization interface. Scheduling and Coordination Module: Performs reverse-driven calculations to order the installation sequence at the construction site. The system parses the data into a timestamped logistics task queue and triggers task push based on the idle status of tractor 301; the historical record query module uses the timeline as an index to store the device's trajectory data and binding history in full through blockchain or database logs, forming a traceable logistics evidence chain.

[0051] In this embodiment, the prefabricated wall panel warehousing and transportation method for prefabricated residential buildings relies heavily on a customized digital logistics system. The system's hardware infrastructure includes a widely deployed RFID sensing network: anti-interference passive RFID tags are affixed or embedded in key areas of each integrated tooling 2, each tractor unit 301, and each trailer 302, such as the sides of the tooling, the front end of the trailer, and the cab, assigning each physical entity a unique digital identity ID. Simultaneously, fixed or handheld RFID readers are deployed at key logistics nodes such as the loading area of ​​the prefabrication plant, the entrances and exits of the storage yard and the gantry crane operation area, and the unloading area of ​​the construction site. Utilizing these hardware facilities, the system can capture real-time event data of equipment passing through or stopping in specific areas, thereby automatically identifying and recording the dynamic binding relationships between "integrated tooling 2 and trailer 302" and between "tractor unit 301 and trailer 302." For example, when the tractor unit reverses and hooks up with the trailer, the card reader simultaneously reads the tags of both, and the system determines that the two are bound together; when the gantry crane lifts the tooling off the trailer, the system determines that the binding is released. This automated relationship mapping mechanism solves the problems of separation of humans and machines and chaotic equipment ownership in traditional logistics.

[0052] As the preferred implementation scheme for the system, the digital logistics system possesses powerful real-time status calculation and intelligent scheduling capabilities. Based on real-time location data uploaded by RFID readers, such as the prefabrication plant, yard, construction site, and real-time binding relationships between equipment, the system dynamically updates the business status of each logical entity. For example, when the integrated tooling 2 is loaded at the prefabrication plant and transported by a pallet, its status automatically updates to "fully loaded - in transit"; when the tractor unit 301 separates from the pallet, its status automatically resets to "idle - dispatchable." Based on these precise real-time statuses, the system algorithm can send accurate scheduling instructions to the tractor unit 301 driver's onboard terminal or mobile app, such as "go to yard position 3 to retrieve pallet T02 bound to tooling B05," thereby achieving seamless connection of logistics tasks and eliminating personnel and equipment waiting caused by information transmission delays.

[0053] To support the complex logic described above, the digital logistics system in the preferred solution is structured into four core functional modules on the computer terminal. These modules work together to achieve full-process control: 1. Equipment Information Management Module: As the system's foundational database, it is responsible for initial configuration. It establishes and maintains an index library containing unique identifiers (IDs) for all integrated tooling 2, trailer 302, and tractor head 301, and sets detailed inherent physical attribute parameters for each type of equipment. For example, the upper limit of tooling volume is used for loading verification, the load threshold of trailer is used for safety warnings, and the traction power of tractor head is used for task matching, ensuring that the scheduling logic conforms to physical limitations.

[0054] 2. Real-time Tracking and Status Dashboard Module: This module constructs a digital twin mapping of the physical logistics scenario. By parsing high-frequency data streams from RFID readers, the module updates the 3D coordinates of each piece of equipment in the prefabrication plant, yard, and construction site in real time, and dynamically renders the topological connection status map of "tooling-trailer" and "trailer-trailer" on the visualization interface in the central control room. Managers can intuitively see which tooling is sitting on which trailer, which tractor is pulling it, and its location, achieving transparency of the entire logistics landscape.

[0055] 3. Scheduling and Coordination Module: As the "brain" of the system, it performs core reverse-driven calculations. This module automatically parses the ordered set of installation sequences from the construction site into a series of logistics task queues with strict timestamp requirements. It monitors the real-time status of tractor 301, and once it detects that a tractor is in an "idle" state, it immediately triggers the optimal task push based on task priority and geographical proximity, realizing the automated optimal allocation of logistics resources.

[0056] 4. Historical Record Query Module: This module constructs a traceable logistics evidence chain. Indexed by a timeline, it stores all device trajectory coordinate data and binding / unbinding history events. By employing blockchain technology or highly reliable database log technology, it ensures the immutability of this data, providing comprehensive and reliable data support for subsequent logistics efficiency analysis, accident liability tracing, and project settlement.

[0057] The beneficial effects of adopting the aforementioned digital logistics system are as follows: through the deep integration of RFID technology and software algorithms, logistics equipment has been transformed from a "dumb terminal" to an "intelligent agent." Automated binding relationship identification eliminates the tediousness and errors of manual scanning or recording; intelligent scheduling based on real-time status significantly improves the utilization rate of expensive equipment such as tractor units; and visualized status dashboards and reverse-driven task calculations ensure that the entire complex trailer-swapping transportation system can operate efficiently like precision gears, strictly following the installation rhythm at the construction site, fundamentally guaranteeing the implementation of the "just-in-time" logistics solution.

[0058] In the preferred embodiment, the scheduling and coordination module works in conjunction with the real-time tracking and status dashboard module to execute a closed-loop state machine algorithm based on RFID event triggering. This algorithm includes the following nonlinear state transition steps: SA loading completion determination: When the RFID reader in the prefabrication plant continuously detects the ID of a certain integrated tooling 2 and the operator terminal confirms that it is "full load", the system locks the tooling status to "waiting for warehousing" and sends a "prefabrication plant pickup" instruction to the idle tractor 301. State transition SB dynamic binding verification: When the tractor 301 reverses and connects to the trailer 302, if the vehicle-mounted RFID reader simultaneously captures the IDs of the tractor 301, the trailer 302, and the integrated tooling 2, the system automatically generates a ternary binding relationship tuple. And set the status of the assembly to "in storage and transportation"; State transition SC conflict anomaly circuit breaker: If the system detects that a "fully loaded integral tooling" is physically bound to a "trailer marked as damaged", or if an "empty tractor" attempts to execute the "ship fully loaded tooling" task but does not detect the tooling ID, the algorithm triggers the anomaly circuit breaker mechanism and pops up a conflict alarm on the scheduling terminal. State transition SD location discrete mapping: When the fully loaded integrated tooling 2 is placed in the storage area by the yard gantry crane, the system immediately releases the above three-element binding relationship and updates the digital status of the integrated tooling 2 to "yard storage - coordinates" after confirming the placement coordinates through triangulation positioning of the fixed RFID reader or card reader of the gantry crane's lifting device. "to bring it into the shipment collection" The pool of candidates for retrieval.

[0059] In this embodiment, the digital logistics system is not merely a passive data recording tool, but an event-driven, proactive control system. The scheduling and coordination module is deeply coupled with the real-time tracking and status dashboard module, jointly operating a closed-loop state machine algorithm. This algorithm abandons traditional linear flow control, instead employing nonlinear state transition logic, meaning the system's next action depends entirely on discrete events occurring in the physical world. The core of the algorithm comprises four key state transition steps, covering the entire lifecycle from loading, transportation, exception handling to warehousing.

[0060] First, the system executes a state transition (SA), i.e., the loading completion determination step. In the prefabrication plant's production area, high-sensitivity RFID readers cover the loading stations. When the reader continuously detects the unique electronic tag ID of a specific integrated tooling 2 within a preset time window, and the on-site operator sends a confirmation signal via a handheld or fixed terminal, indicating that the physical loading operation has been completed and quality inspection has passed, the algorithm triggers a state transition. The system then locks the logical state of the integrated tooling 2 from production to "awaiting warehousing" in the database. This state locking mechanism prevents data contention. Simultaneously, based on this state change, the system immediately generates a task instruction for picking up goods from the prefabrication plant and accurately pushes it to the nearest idle tractor unit 301, achieving millisecond-level automatic task distribution.

[0061] The system then executes state transition SB, i.e., the dynamic binding verification step. This is the core step in realizing digital management of trailer swapping transportation. When the tractor unit 301, upon receiving the instruction, reverses and mechanically connects with the trailer 302 carrying the integrated tooling 2, the on-board RFID reader deployed behind the tractor unit's cab or on the chassis simultaneously scans the surrounding environment. Only when the reader captures three key IDs at the same time—the ID of the tractor unit 301 itself, the ID of the connected trailer 302, and the ID of the integrated tooling 2 mounted on the trailer—does the algorithm determine that the vehicle assembly is successful. The system automatically generates a ternary binding tuple containing the identity information of the three parties. This tuple represents an independent logistics and transportation unit in the system. The system then updates the logical state of the unit to "in warehousing and transportation" and marks it as a moving entity on the digital twin map, beginning to track its trajectory in real time.

[0062] Meanwhile, the algorithm is under continuous monitoring, ready to execute the state transition (SC), i.e., the conflict anomaly circuit breaker step, at any time. This is a logical gating mechanism to ensure system security and data accuracy. The system backend compares physical scan data with equipment ledger status in real time. If the data uploaded by the vehicle-mounted card reader shows that a fully loaded integral tooling is being physically bound to a trailer marked as damaged or under repair in the maintenance record, or if a tractor marked as empty is performing a task to ship a fully loaded tooling, but its card reader fails to detect a valid tooling ID, the algorithm will immediately trigger the anomaly circuit breaker mechanism. At this time, the system will forcibly interrupt the current task flow, prevent erroneous state updates, and pop up a high-priority conflict alarm on the dispatcher's monitoring terminal, requiring manual intervention for verification. This mechanism effectively prevents safety and management accidents such as operating with defects or false alarms of empty vehicles.

[0063] Finally, the state transition SD, or the location discrete mapping step, is executed. When the transport vehicle arrives at the yard, and the gantry crane lifts the fully loaded integral tool 2 off the pallet and places it in the storage area, the physical connection is broken. At this time, the system can confirm the precise physical coordinates of the tool in the yard by using signal triangulation positioning through fixed RFID readers installed around the yard, or by using the position code read at the moment of release by a dedicated reader installed on the gantry crane's lifting device. Once the coordinates are confirmed, the algorithm immediately performs an unbinding operation, releasing the previously generated ternary binding relationship and releasing the tractor head 301 and the pallet 302 to return them to an idle state. At the same time, the system updates the digital state of the integral tool 2 to a yard storage state with specific spatial attributes, and its position parameters are recorded as coordinates. At this point, the tooling has officially entered the shipment assembly stage. The search pool of candidates awaits invocation of subsequent shipping instructions.

[0064] The beneficial effects of adopting the above technical solution are as follows: This closed-loop state machine algorithm abstracts complex operations in the physical world into precise digital state transitions, greatly improving the automation level and accuracy of logistics management. Firstly, it uses ternary binding relation tuples... The automatic generation and unbinding of data enables dynamic tracking of the vehicle, container, and cargo, solving the information gap problem caused by the separation of vehicle and cargo in traditional logistics. Secondly, the conflict and anomaly circuit breaker mechanism acts as an intelligent firewall, proactively identifying and blocking risks from violations or equipment malfunctions, ensuring operational safety. Finally, the discrete mapping of storage locations transforms disordered physical stacking into ordered digital coordinates. This provides a solid data foundation for subsequent rapid retrieval and shipment based on the installation sequence, ensuring the accurate execution of "just-in-time" shipments.

[0065] Example 3 Further explanation in conjunction with Example 1, such as Figure 1-21 As shown, a method for storing and transporting prefabricated wall panels for prefabricated housing involves hardware facilities including a mold platform 1, an integrated tooling 2, and a transport vehicle 3. The mold platform 1 is used for the production of prefabricated wall panels, such as... Figure 1 As shown; the integrated fixture 2 is used to store precast wall panels, such as... Figure 2 As shown. The structure of transport vehicle 3 is as follows. Figures 3-4 As shown, it mainly consists of a tractor head 301 and a trailer 302, which can be separated. In addition, the sites involved in the technical solution of this invention include a prefabrication plant, a storage yard, and a construction site. The mold platform 1 is used to produce prefabricated components in the prefabrication plant, while the integrated tooling 2 and the transport vehicle 3 are moved between the three sites.

[0066] After the precast wall panels are manufactured in the prefabrication plant, they are loaded into integral fixtures 2 and then transported by transport vehicles 3 to the storage yard. Transport vehicles 3 then transport empty integral fixtures 2 from the storage yard back to the prefabrication plant; this process is called warehousing. When precast wall panels are needed at the construction site, transport vehicles 3 transport fully loaded integral fixtures 2 from the storage yard to the construction site, and then transport empty integral fixtures 2 from the construction site back to the storage yard; this process is called shipment. The overall process is as follows: Figure 5 As shown.

[0067] The overall derivation process of a prefabricated wall panel storage and transportation method for prefabricated housing is as follows: Figure 6 As shown, the sequence begins with the on-site installation plan, then works backwards to the prefabrication plant production plan, followed by the yard storage and shipping plan. An example is provided below to illustrate this: (1) Define the set: 1) Define the set of prefabricated wall panels: Let the total number of prefabricated wall panels required for a certain building be . n Constructing prefabricated wall panel assembly .

[0068] 2) Define an ordered set for the installation sequence: Because there is a strict order to the installation on the construction site, we define an ordered set for the installation sequence. S , S It is a set A The orderly arrangement, that is The order of the elements represents the sequence in which the wall panels are installed.

[0069] 3) Define the set of mold sets: Let the total number of mold sets used by the prefabrication plant to produce this building be... x Build a set of templates Each element (1≤k≤x) represents one independent mold, and the number of molds is... x The production capacity is determined by the mold table area and production capacity: the area of ​​each mold table is fixed, the difference lies in the area of ​​each precast wall panel, so mold tables of the same area may produce different numbers of wall panels.

[0070] 4) Define the set of integral tooling: Let y be the total number of integral tooling used for loading precast wall panels, and construct the set of integral tooling. Each element (1≤k≤y) represents one independent integral tooling, and the number of tooling units... y The actual loading capacity of the tooling is determined by the following: the loading capacity of each integral tooling is fixed, the difference lies in the volume of each prefabricated wall panel. Therefore, integral tooling with the same loading capacity may stack different numbers of wall panels.

[0071] 5) Define the yard storage set: Construct the yard set Y An integrated fixture used to store fully loaded wall panels. Y It is an unordered set (since the storage does not require consideration of order). 6) Define the shipping task set: Construct the shipping set F , F It is a collection of storage yards Y An ordered subset of elements, the order of which is determined by the installation progress at the construction site.

[0072] (2) Specific process: 1) According to the installation order set S Allocation of template set M Production (mold making stage) Set operations: from Let's set off, for each distribute A contiguous subsets Satisfying: ① All No intersection and union is A ② Subset wall panel area and < mold table area.

[0073] For example: Let M 1. Area 80m² 2 , (Installation order: Install first) ,Again ),and =30m 2 , =40m 2 , =50m 2 Since 30 + 40 = 70 < 80 (just enough for 2 pieces), and 30 + 40 + 50 = 120 > 80 (too much for 3 pieces), therefore... Assigned to Remaining constitute ={ }, assigned to ,Right now → , → .

[0074] 2) Subset of the model platform A k Matching integrated tooling set B Loading (packing process) Set operations: Create M → B The mapping, corresponding to the packing and placement The following conditions must be met: ① The stacking order and S Consistent; ② Subset wall panel volume ≤ tooling capacity, if exceeded, dismantle. .

[0075] For example: Let Loading capacity is 50m 3 , (from) M 1), and .

[0076] ① Under normal circumstances: 20 + 30 = 50 ≤ 50 Directly install ; ={ (Volume 40) Loaded into $B_2$ Go to the middle.

[0077] ② Splitting scenario: If yes (If volume 90 > 50), then disassemble into (50) Installed $B_1$ Go to the middle, ={ }(40) Installed Go to the middle.

[0078] 3) Tooling assembly B Included in the storage yard collection Y (Warehousing process) Set operation: All fully loaded B Directly classified Y ( Y = B (It is not in any particular order; just remember "what to put in")

[0079] Simplified example: fully loaded (Pack ), (Pack{ }), directly categorized into Y={ , }, just pile them up randomly, as long as you remember " → , → ".

[0080] 4) From Y Extract ordered subsets to form the shipping set F (Shipping process) Assembly operation: Install according to site requirements ( S (prefix), from Y Prompt corresponding constitute F , F Sequence and Consistent.

[0081] Simplified example: The site needs to be installed this week. ={ , } (install first) , ), then from Y ={ , Extract from} F ={ }(because Pack{ , }), send directly If you want to install ={ , , }, then extract F={ , },according to First, Shipped in the following order.

[0082] The above content describes the implementation method of starting from the installation plan at the construction site, working backwards to the prefabrication plant production plan, and then connecting it with the storage and shipping plan at the yard. The following section describes the storage and shipping processes.

[0083] The specific process of warehousing technology is as follows: Figures 7-14 As shown, specifically: (1) Connect the tractor head 301 to the trailer plate 302, and then place the unloaded integral tooling 2 on the trailer plate 302. Figure 7 ); (2) The tractor 301 transports the trailer 302 to the wall panel loading position in the prefabrication plant. Figure 8 ); (3) The tractor head 301 separates from the trailer 302, leaving the trailer 302 in the prefabrication plant for loading, while the tractor head 301 goes to pull other trailers 202 that need to be transported (the destination of the tractor head 301 is determined by the dispatch system). Figure 9 ); (4) In the prefabrication plant, a gantry crane is used to stack the prefabricated wall panels into the integral fixture 2 on the trailer 301 until it is full (the space is full or the weight is full). Figure 10 ); (5) After the integral tooling 2 is fully loaded, the tractor 301 arrives at the turnover area in the prefabrication plant and connects to the fully loaded trailer 302. Figure 11 ); (6) The tractor 301 pulls the pallet 302 for short-distance warehousing and transportation (prefabrication plant → yard), transporting the fully loaded pallet 302 to the designated location in the yard (the specific location of the rack storage is determined by the initial planning or dispatch system). Figure 11 ); (7) Use the gantry crane in the yard to lift the fully loaded integral tooling 2 on the pallet 302 to the storage location for storage. Figure 12 ); (8) Use a gantry crane to lift an unloaded integral tool 2 from the yard onto the pallet 302. Figure 14 Then, the tractor 301 transports it to the loading position in the prefabrication plant to complete one round of wall panel storage and tooling turnover. Repeating (1) to (8) will complete one storage cycle after another.

[0084] The specific process of shipping is as follows: Figures 15-21 As shown, specifically: (1) The tractor head 301 connects to the empty trailer 302, and the tractor head 301 pulls the empty trailer 302 to the designated position in the yard (this position is the loading position of the fully loaded integral tooling 2 to be shipped. The specific tooling and its components are specified by the construction site and the dispatching system. The tractor head 301 pulls the trailer 302 to this position as required). Figure 15 ); (2) In the yard, use a gantry crane to lift the empty integral fixture 2 on the empty pallet 302 to the designated empty space (this fixture can then be used as a turnover fixture for warehousing and storage). Figure 16 ); (3) In the yard, use a gantry crane to hoist the designated fully loaded integral tool 2 onto the trailer 302. Figure 16 ); (4) Use tractor head 301 to transport pallet 302 to the designated location on the construction site (stockyard → construction site). Figure 17 ); (5) At the construction site, the tractor head 301 is separated from the trailer 302, leaving the fully loaded trailer 302 at the construction site for on-site hoisting, while the tractor head 301 goes to tow other trailers 302 that need to be transported (the destination of the tractor head is determined by the dispatch system). Figure 19 ); (6) At the construction site, the precast wall panels in the integrated tooling 2 are hoisted away and installed one by one according to the installation sequence. During this process, the drag plate 302 and the integrated tooling 2 remain in place. (7) After the precast wall panels in the integral fixture 2 are hoisted, the tractor 301 arrives at the construction position and connects to the unloaded trailer 302 (coordinated through the dispatch system). Figure 20 ); (8) The tractor 301 pulls the empty trailer 302 back to the storage yard (construction site → storage yard), thus completing one round of wall panel outbound shipment and tooling turnover. Figure 21 Repeating (1) to (8) will complete one shipment cycle after another.

[0085] In addition, the warehousing and shipping process also includes a digital logistics system to achieve real-time location tracking, status recording, and binding relationship management of the three core pieces of equipment: "integrated tooling 2, pallet 302, and tractor head 301." This system adapts to the cyclical process of warehousing (prefabrication plant → yard) and shipping (yard → construction site), reducing human coordination errors and improving equipment turnover efficiency. The digital logistics system architecture includes a hardware layer and a software layer. The hardware layer includes: (1) Passive RFID tags: Assign a unique ID (such as "tool-001", "trailer-005" and "trailer-03") to each integrated tool 2, trailer 302 and tractor head 301, and deploy them on the side of the integrated tool 2, the front end of the trailer 302 and the cab of the tractor head 301.

[0086] (2) RFID reader: reads tag information and triggers equipment status / location updates (such as tooling and trailer binding, tractor head receiving orders), and is deployed in the loading area of ​​the prefabrication plant, next to the gantry crane in the yard, and the unloading area of ​​the construction site.

[0087] (3) Mobile App: The tractor driver and gantry crane / gantry crane operator receive tasks and report operation results (such as "Plate 005 has arrived at the yard" and "Tooling 001 has been hoisted") on the tractor driver's mobile phone and the gantry crane operator's terminal.

[0088] (4) Positioning module: Based on the real-time position of the tractor head using Beidou positioning, the tooling / trailer position is marked based on the "fixed card reader position" (such as "prefabrication plant loading area", "stockyard rack position 3", "construction site area A").

[0089] The software layer includes: (1) Equipment Information Management Module Establish an equipment ledger: record the unique ID, specifications (such as the loading volume of the tooling and the load capacity of the pallet), and current status (tooling: empty / full load; pallet: idle / bound to tooling; tractor: idle / in transit) for each tooling, pallet, and tractor head. Binding relationship record: Automatically stores "tooling-trailer" binding information (such as "tooling 001-trailer 005") and "trailer head-trailer" binding information (such as "trailer head 03-trailer 005"), and updates in real time when binding / unbinding.

[0090] (2) Real-time tracking and status dashboard module Visual dashboard: Displays the real-time location, status, and binding relationships of the three main types of equipment (prefabrication plant, storage yard, construction site), for example: Tooling 001: Status "Full Load", attached to pallet 005, location "Rack No. 3 in the yard"; Trailer 005: Status "Bound to tooling", bound to tractor head 03, location "In transit (stockyard → construction site)"; Trolley head 03: Status "In transit", task "Deliver trailer 005 to construction site area A". Status update trigger: Automatically triggered by RFID card reader (e.g., when the tooling is hoisted to the tray, the card reader reads the tags of both, automatically binds and updates the status), or manually reported by the operator through the APP (e.g., after the gantry crane completes the hoisting, click "Tooling 001 has been hoisted to tray 005").

[0091] (3) Scheduling and Coordination Module Task allocation: Based on the warehousing / shipping process requirements, the system automatically pushes tasks to tractor drivers and operators. For example, in the warehousing process, when the prefabrication plant loading area needs empty tooling, the system pushes "Go to the yard to pick up empty tooling 002 to the prefabrication plant loading area" to tractor 03. In the shipping process: when tool 001 is needed at the construction site, the system pushes "Go to rack position 3 in the yard to pick up pallet 005 (bind tool 001) and send it to area A of the construction site" to tractor 03. Conflict alert: If the tractor is assigned to multiple tasks at the same time, or if the tooling is incorrectly bound (such as binding a fully loaded tooling to an empty tractor), the system will pop up a reminder to the dispatcher.

[0092] (4) Historical Record Query Module Store operation records for each device, including "loading time, transportation route, and shipping time of tooling 001", "binding history of trailer 005", and "task completion record of trailer 03". Supports querying by device ID and time range for easy traceability.

[0093] The usage methods of a digital logistics system are as follows: (1) Adapt to warehousing processes (taking "loading with tools → transporting to the yard" as an example) Step (4) (loading wall panels with gantry crane): After tooling 001 is full, the operator clicks "Tooling 001 is fully loaded" in the APP, and the system updates the status of tooling 001 to "fully loaded". Step (5) (Trailer head connected to trailer): When the tractor head 03 is connected to the trailer 005, the RFID reader reads the tags of both, the system automatically records the "trailer head 03-trailer 005" binding, and updates the tractor head status to "in transit"; Step (7) (Gantry crane hoists tooling to yard): When the gantry crane hoists tooling 001 to the yard rack, the card reader reads the tooling 001 tag, the system updates its location to "yard rack position 3", and unbinds "tooling 001-trailer 005", and the status of trailer 005 changes to "idle". 2. Adapt to shipping process (taking "tools from the yard to the construction site" as an example) Step (1) (Trailer head to yard): The system pushes "to the empty tool 002 of pallet 005 to rack position 3 in the yard and to connect to the fully loaded tool 001" to the tractor head 03, and displays the position of tool 001; Step (3) (Gantry crane fully loaded with tooling): When the gantry crane lifts tooling 001 to the trailer 005, the card reader triggers the binding of "tooling 001-trailer 005", and the system updates the tooling status to "pending shipment". Step (6) (On-site hoisting): After the wall panel is hoisted on the construction site, the operator clicks "Tooling 001 is no load", and the system updates the status of tooling 001 to "no load".

[0094] The above embodiments are merely preferred technical solutions of the present invention and should not be considered as limitations on the present invention. The scope of protection of the present invention should be limited to the technical solutions described in the claims, including equivalent substitutions of the technical features described in the claims. That is, equivalent substitutions and improvements within this scope are also within the scope of protection of the present invention.

Claims

1. A method for storing and transporting prefabricated wall panels for prefabricated housing, characterized by: The method includes: S1. Define the set of prefabricated wall panels required for a certain building. and installation order ordered set And construct the prefabrication plant's mold set (1) and integrated tooling (2) set ; S2, Ordered Sets Based on Installation Order The precast wall panels are distributed to the mold table (1) for production, and the produced precast wall panels are matched to the integrated tooling (2) for loading, ensuring that the stacking order in the integrated tooling (2) is consistent with the installation order; S3. Use transport vehicle (3) to transport the fully loaded integral tooling (2) from the prefabrication plant to the storage yard for storage, and transport the empty integral tooling (2) back to the prefabrication plant. S4. According to the installation progress at the construction site, use a transport vehicle (3) to extract the corresponding integral tooling (2) from the storage yard and send it to the construction site, and transport the empty integral tooling (2) back to the storage yard.

2. The method for storing and transporting prefabricated wall panels for prefabricated housing according to claim 1, characterized in that: Steps S1 and S2 are achieved by running a production planning and scheduling system on a computer terminal, and the steps include: Define prefabricated wall panel set ,in This represents the total number of wall panels; Define the installation order ordered set S is an ordered permutation of set A, where the position of the element represents the order in which they are installed. Define the set of templates (1) ,in The total number of molds, where each element (1≤k≤x) represents one independent mold. The number of molds x is determined by the area of ​​the mold and the production capacity: the area of ​​each mold is fixed, the difference is that the area of ​​each precast wall panel is different, so molds with the same area may produce different numbers of wall panels. Production planning and scheduling systems from ordered sets Start, calculate and assign to each mold. Allocation Set contiguous subsets Satisfy all subsets No intersection and union is and subset The sum of the areas of all interior wall panels is less than the area of ​​the formwork. The area of ​​the mold platform is determined, thereby generating a mold platform layout plan.

3. The method for storing and transporting prefabricated wall panels for prefabricated housing according to claim 2, characterized in that: Steps S2, S3, and S4 are achieved by running the scheduling and coordination module of the digital logistics system on a computer terminal. The steps include: Define the integral tooling (2) set ,in The total number of integral fixtures for loading precast wall panels, where each element (1≤k≤y) represents one independent integral tooling. The number of toolings y is determined by the actual loading capacity of the tooling: the loading capacity of each integral tooling is fixed. The difference lies in the volume of each prefabricated wall panel. Therefore, integral toolings with the same loading capacity may stack different numbers of wall panels. The scheduling and coordination module establishes a subset of the platform. To integrated tooling assembly The mapping will set the subset The corresponding precast wall panels are installed into an integrated fixture. Calculate and verify subsets The total volume of all interior wall panels is less than or equal to that of the monolithic fixture. The loading capacity; if the sum of the volumes exceeds this, then the subset will be... Disassemble and install multiple integrated tooling units (2); Constructing a collection of stockyards An integrated fixture used to store fully loaded wall panels. As an unordered set, all fully loaded integral tooling (2) is unorderedly assigned to the set. And record the storage location; Build a shipping collection , It is a collection of storage yards Y The ordered subset of elements, whose order is determined by the installation progress at the construction site, is used by the scheduling and coordination module based on the ordered subset that currently needs to be installed at the construction site. From the storage yard The corresponding integral tooling (2) is retrieved and extracted from the middle to form a set. Ensure the set The order of shipment and Consistent.

4. The method for storing and transporting prefabricated wall panels for prefabricated housing according to claim 1, characterized in that: The transport vehicle (3) in steps S3 and S4 consists of a tractor (301) and a trailer (302), and the tractor (301) and the trailer (302) can be separated and reassembled; Step S3 includes: the tractor (301) pulls the empty trailer (302) to the loading point of the prefabrication plant, and the tractor (301) separates away; in the prefabrication plant, the prefabricated wall panels are stacked on the integrated fixture (2) on the trailer (302) until it is full; the tractor (301) returns to pull the fully loaded trailer (302) to the yard, and the yard gantry crane lifts the fully loaded integrated fixture (2) to the storage position.

5. The method for storing and transporting prefabricated wall panels for prefabricated housing according to claim 4, characterized in that: In step S3, after the yard gantry crane unloads the fully loaded integral tooling (2), the following steps are also included: the yard gantry crane hoists the empty integral tooling (2) onto the trailer (302); the tractor (301) pulls the trailer (302) carrying the empty integral tooling (2) back to the prefabrication plant to complete the storage cycle.

6. The method for storing and transporting prefabricated wall panels for prefabricated housing according to claim 4, characterized in that: Step S4 includes: the tractor (301) pulls the empty trailer (302) to the designated location in the yard; the yard gantry crane hoists the fully loaded integral jig (2) specified in the installation sequence onto the trailer (302); the tractor (301) pulls the fully loaded trailer (302) to the construction site, and the tractor (301) separates away; the construction site lifting equipment directly lifts the precast wall panel from the integral jig (2) for installation; After unloading and installation are completed at the construction site in step S4, the following steps are also included: the tractor (301) returns to the construction site to connect the trailer (302) carrying the empty integral tooling (2); the tractor (301) pulls the trailer (302) back to the yard to complete the shipping cycle.

7. The method for storing and transporting prefabricated wall panels for prefabricated housing according to claim 6, characterized in that: The method uses a digital logistics system for equipment management, which includes RFID tags deployed on integrated tooling (2), tractor (301) and trailer (302), as well as RFID readers deployed in prefabrication plants, storage yards and construction sites; The digital logistics system establishes a unique ID for equipment ledger records and automatically identifies and records the binding relationship between "integrated tooling (2), pallet (302)" and "trailer head (301), pallet (302)" through RFID card readers.

8. The method for storing and transporting prefabricated wall panels for prefabricated housing according to claim 7, characterized in that: The digital logistics system updates the status in real time based on the location and binding relationship of the equipment, including the full load / empty status of the integrated tooling (2) and the transportation / idle status of the tractor (301), and sends dispatch instructions to the tractor (301) driver.

9. The method for storing and transporting prefabricated wall panels for prefabricated housing according to claim 7, characterized in that: The digital logistics system is deployed on a computer terminal as four functional modules, including: Equipment Information Management Module: Initialize the system, establish a unique identification (ID) database containing integrated tooling (2), trailer (302) and tractor (301), and set the inherent attribute parameters of each type of equipment, including the upper limit of tooling volume, trailer load threshold and tractor traction power; Real-time tracking and status dashboard module: Constructs a digital twin mapping, refreshes the three-dimensional coordinate mapping of equipment in the prefabrication plant, storage yard and construction site in real time through the data stream of RFID card reader, and dynamically renders the topological connection status of "tooling and trailer" and "trailer head and trailer" on the visualization interface; Scheduling and Coordination Module: Performs reverse-driven calculations to order the installation sequence at the construction site. The task queue is parsed into a timestamped logistics task queue and the task is pushed based on the idle status of the tractor (301); the historical record query module uses the time axis as an index to store the trajectory data and binding history of the device through the blockchain or database log storage to form a traceable logistics evidence chain.

10. The method for storing and transporting prefabricated wall panels for prefabricated housing according to claim 9, characterized in that: The scheduling and coordination module works in conjunction with the real-time tracking and status dashboard module to execute a closed-loop state machine algorithm based on RFID event triggering. This algorithm includes the following nonlinear state transition steps: SA loading completion determination: When the RFID reader in the prefabrication plant continuously detects the ID of a certain integrated tooling (2) and the operator terminal confirms the "full load" signal, the system locks the tooling status to "waiting for warehousing" and sends the "prefabrication plant pickup" instruction to the idle tractor (301). State transition SB dynamic binding verification: When the tractor (301) reverses and connects to the trailer (302), if the vehicle-mounted RFID reader simultaneously captures the ID of the tractor (301), the ID of the trailer (302), and the ID of the integrated tooling (2), the system automatically generates a ternary binding relationship tuple. And set the status of the assembly to "in transit"; State transition SC conflict anomaly circuit breaker: If the system detects that a "fully loaded integral tooling" is physically bound to a "trailer marked as damaged", or if an "empty tractor" attempts to execute the "ship fully loaded tooling" task but does not detect the tooling ID, the algorithm triggers the anomaly circuit breaker mechanism and pops up a conflict alarm on the scheduling terminal. State transition SD storage location discrete mapping: When the fully loaded integral tooling (2) is placed in the storage area by the yard gantry crane, the system immediately releases the above three-element binding relationship and updates the digital status of the integral tooling (2) to "yard storage - coordinates" by triangulation positioning of the fixed RFID reader or confirmation of the placement coordinates by the gantry crane lifting device reader. "to bring it into the shipment collection" The pool of candidates for retrieval.

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